Danfoss VLT Programming Guide

5.1.18 20-** FC Closed Loop
Par.
No. #
Parameter description Default value 4-set-up Change dur-
ing operation
Conver-
sion index
Type
20-0* Feedback
20-00 Feedback 1 Source [2] Analog input 54 All set-ups TRUE - Uint8
20-01 Feedback 1 Conversion [0] Linear All set-ups FALSE - Uint8
20-02 Feedback 1 Source Unit null All set-ups TRUE - Uint8
20-03 Feedback 2 Source [0] No function All set-ups TRUE - Uint8
20-04 Feedback 2 Conversion [0] Linear All set-ups FALSE - Uint8
20-05 Feedback 2 Source Unit null All set-ups TRUE - Uint8
20-06 Feedback 3 Source [0] No function All set-ups TRUE - Uint8
20-07 Feedback 3 Conversion [0] Linear All set-ups FALSE - Uint8
20-08 Feedback 3 Source Unit null All set-ups TRUE - Uint8
20-12 Reference/Feedback Unit null All set-ups TRUE - Uint8
20-13 Minimum Reference/Feedb. 0.000 ProcessCtrlUnit All set-ups TRUE -3 Int32
20-14 Maximum Reference/Feedb. 100.000 ProcessCtrlUnit All set-ups TRUE -3 Int32
20-2* Feedback/Setpoint
20-20 Feedback Function [3] Minimum All set-ups TRUE - Uint8
20-21 Setpoint 1 0.000 ProcessCtrlUnit All set-ups TRUE -3 Int32
20-22 Setpoint 2 0.000 ProcessCtrlUnit All set-ups TRUE -3 Int32
20-23
Setpoint 3 0.000 ProcessCtrlUnit All set-ups TRUE -3 Int32
20-3* Feedb. Adv. Conv.
20-30 Refrigerant [0] R22 All set-ups TRUE - Uint8
20-31 User Defined Refrigerant A1 10.0000 N/A All set-ups TRUE -4 Uint32
20-32 User Defined Refrigerant A2 -2250.00 N/A All set-ups TRUE -2 Int32
20-33 User Defined Refrigerant A3 250.000 N/A All set-ups TRUE -3 Uint32
20-34 Duct 1 Area [m2] 0.500 m2 All set-ups TRUE -3 Uint32
20-35 Duct 1 Area [in2] 750 in2 All set-ups TRUE 0 Uint32
20-36 Duct 2 Area [m2] 0.500 m2 All set-ups TRUE -3 Uint32
20-37 Duct 2 Area [in2] 750 in2 All set-ups TRUE 0 Uint32
20-38
Air Density Factor [%] 100 % All set-ups TRUE 0 Uint32
20-6* Sensorless
20-60 Sensorless Unit null All set-ups TRUE - Uint8
20-69 Sensorless Information 0 N/A All set-ups TRUE 0
VisStr[2
5]
20-7* PID Autotuning
20-70 Closed Loop Type [0] Auto 2 set-ups TRUE - Uint8
20-71 PID Performance [0] Normal 2 set-ups TRUE - Uint8
20-72 PID Output Change 0.10 N/A 2 set-ups TRUE -2 Uint16
20-73 Minimum Feedback Level -999999.000 ProcessCtrlUnit 2 set-ups TRUE -3 Int32
20-74 Maximum Feedback Level 999999.000 ProcessCtrlUnit 2 set-ups TRUE -3 Int32
20-79
PID Autotuning [0] Disabled All set-ups TRUE - Uint8
20-8* PID Basic Settings
20-81 PID Normal/ Inverse Control [0] Normal All set-ups TRUE - Uint8
20-82 PID Start Speed [RPM] SR All set-ups TRUE 67 Uint16
20-83 PID Start Speed [Hz] SR All set-ups TRUE -1 Uint16
20-84 On Reference Bandwidth 5 % All set-ups TRUE 0 Uint8
20-9* PID Controller
20-91 PID Anti Windup [1] On All set-ups TRUE - Uint8
20-93 PID Proportional Gain 0.50 N/A All set-ups TRUE -2 Uint16
20-94 PID Integral Time 20.00 s All set-ups TRUE -2 Uint32
20-95 PID Differentiation Time 0.00 s All set-ups TRUE -2 Uint16
20-96 PID Diff. Gain Limit 5.0 N/A All set-ups TRUE -1 Uint16
5 Parameter Lists VLT
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HVAC Drive Programming Guide
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Danfoss VLT Specifications

General

Frequency	50/60 Hz
Enclosure	IP20, IP21, IP55, IP66
Series	VLT
Control Technique	Flux Vector Control
Output Voltage	0-Vinput
Control Method	Fieldbus
Communication Interface	PROFIBUS, CANopen
Protection Features	Overload, Overvoltage, Undervoltage, Short Circuit, Ground Fault
Cooling Method	Liquid Cooled
Storage Temperature	-25°C to +70°C
Relative Humidity	5-95% non-condensing
Altitude	Up to 1000m (3280ft) without derating, up to 4000m (13120ft) with derating
Operating Temperature	-10°C to +50°C (14°F to 122°F)